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Finding the Fourth Proportional to 11,969.32, 17,951.86 and 3,647.32

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Solution

The fourth proportional to 11,969.32, 17,951.86 and 3,647.32 is: 5,470.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,969.32 : 17,951.86 = 3,647.32 : x
  2. Step 2: Convert to fraction form
    11,969.32/17,951.86 = 3,647.32/x
  3. Step 3: Cross multiply
    11,969.32x = 17,951.86 × 3,647.32
  4. Step 4: Simplify right side
    11,969.32x = 65,476,178.02
  5. Step 5: Solve for x
    x = 65,476,178.02/11,969.32
  6. Step 6: Final answer
    x = 5,470.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.